A diagnosis aiding system that photographs an examination subject without a photographing order and generates image data of the examination subject, and thereafter links the image data with the examination subject, includes: an image generating unit that photographs an examination subject and generates data of a photographed image of the examination subject; a switching operation unit to input switching information on an examination subject; and a controller that stores one or more photographed images, of a single examination subject, generated by the image generating unit between input of preceding switching information and input of subsequent switching information via the switching operation unit, linking the one or more photographed images with examination subject information on the single examination subject.